Declension table of ?pradhānaka

Neuter	Singular	Dual	Plural
Nominative	pradhānakam	pradhānake	pradhānakāni
Vocative	pradhānaka	pradhānake	pradhānakāni
Accusative	pradhānakam	pradhānake	pradhānakāni
Instrumental	pradhānakena	pradhānakābhyām	pradhānakaiḥ
Dative	pradhānakāya	pradhānakābhyām	pradhānakebhyaḥ
Ablative	pradhānakāt	pradhānakābhyām	pradhānakebhyaḥ
Genitive	pradhānakasya	pradhānakayoḥ	pradhānakānām
Locative	pradhānake	pradhānakayoḥ	pradhānakeṣu

Compound pradhānaka -

Adverb -pradhānakam -pradhānakāt